<template>
  <div class="upload-container">
    <el-button :style="{background:color,borderColor:color}" icon="el-icon-upload" size="mini" type="primary" @click=" dialogVisible=true">上传图片
    </el-button>
    <el-dialog :visible.sync="dialogVisible">
      <el-upload
        :multiple="true"
        :file-list="fileList"
        :show-file-list="true"
        :on-remove="handleRemove"
        :action="uploadUrl"
        :headers="{ Authorization: getToken }"
        :on-success="handleSuccess"
        :before-upload="beforeUpload"
        class="editor-slide-upload"
        list-type="picture-card">
        <el-button size="small" type="primary">点击上传</el-button>
      </el-upload>
      <el-button @click="dialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="handleSubmit">确 定</el-button>
    </el-dialog>
  </div>
</template>

<script>
// import { getToken } from 'api/qiniu'

export default {
  name: 'EditorSlideUpload',
  props: {
    color: {
      type: String,
      default: '#1890ff',
    },
  },
  data() {
    return {
      dialogVisible: false,
      listObj: {},
      fileList: [],

    };
  },
  computed: {
    uploadUrl() {
      return `${process.env.VUE_APP_API_URL}file/uploadImage`;
    },
    getToken() {
      return this.$store.getters.token;
    },
  },
  methods: {
    checkAllSuccess() {
      return Object.keys(this.listObj).every(item => this.listObj[item].hasSuccess);
    },
    handleSubmit() {
      const arr = Object.keys(this.listObj).map(v => this.listObj[v]);
      if (!this.checkAllSuccess()) {
        this.$message('请等待所有图片上传成功 或 出现了网络问题，请刷新页面重新上传！');
        return;
      }
      this.$emit('successCBK', arr);
      this.listObj = {};
      this.fileList = [];
      this.dialogVisible = false;
    },
    handleSuccess(response, file) {
      const { uid } = file;
      const objKeyArr = Object.keys(this.listObj);
      for (let i = 0, len = objKeyArr.length; i < len; i += 1) {
        if (this.listObj[objKeyArr[i]].uid === uid) {
          this.listObj[objKeyArr[i]].url = response.files.file;
          this.listObj[objKeyArr[i]].hasSuccess = true;
          return;
        }
      }
    },
    handleRemove(file) {
      const { uid } = file;
      const objKeyArr = Object.keys(this.listObj);
      for (let i = 0, len = objKeyArr.length; i < len; i += 1) {
        if (this.listObj[objKeyArr[i]].uid === uid) {
          delete this.listObj[objKeyArr[i]];
          return;
        }
      }
    },
    beforeUpload(file) {
      // eslint-disable-next-line no-underscore-dangle
      const _URL = window.URL || window.webkitURL;
      const fileName = file.uid;
      this.listObj[fileName] = {};
      return new Promise((resolve) => {
        const img = new Image();
        img.src = _URL.createObjectURL(file);
        img.onload = function onload() {
          this.listObj[fileName] = {
            hasSuccess: false, uid: file.uid, width: this.width, height: this.height,
          };
        };
        resolve(true);
      });
    },
  },
};
</script>

<style rel="stylesheet/scss" lang="scss" scoped>
.editor-slide-upload {
  margin-bottom: 20px;
  /deep/ .el-upload--picture-card {
    width: 100%;
  }
}
</style>
